diff --git a/rust/proc_macro.go b/rust/proc_macro.go
index b048087..2719161 100644
--- a/rust/proc_macro.go
+++ b/rust/proc_macro.go
@@ -27,6 +27,7 @@
 
 type procMacroDecorator struct {
 	*baseCompiler
+	*flagExporter
 
 	Properties ProcMacroCompilerProperties
 }
@@ -35,6 +36,7 @@
 }
 
 var _ compiler = (*procMacroDecorator)(nil)
+var _ exportedFlagsProducer = (*procMacroDecorator)(nil)
 
 func ProcMacroFactory() android.Module {
 	module, _ := NewProcMacro(android.HostSupportedNoCross)
@@ -46,6 +48,7 @@
 
 	procMacro := &procMacroDecorator{
 		baseCompiler: NewBaseCompiler("lib", "lib64", InstallInSystem),
+		flagExporter: NewFlagExporter(),
 	}
 
 	module.compiler = procMacro